Loose-leaf binder.



` PATENTED JULY-30, 1907.

J. F. GLOB.

LOOSE LEAF BINDER.

APPLIoA'rIoN FILED JULYe,19os.

2 SHEETS-SHEET 1.

l I H ATTORNEYS No. 861,968. PATENTED JULY so, 1907 J. P. GLOB. LOOSE LEAP BINDER.

.APPLICATION FILED JULY6,1906.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFIGE.

LOOSE-LEAF BINDER.

Specification of Letters Patent.

Patented July 30,1907.

Application filed July 6,1906. Serial No. 324,922.

To all whom it may concern:

Be it known that I, JOHN F. Gnou, a citizen of the United States, residing at Manning, in the county o Carroll and State oi Iowa, have invented a new and useful Improvement in Loose-Leaf Binders, of which the following is a speciiication.

My invention is in the nature of a loose leaf binder, ior binding the leaves of a ledger, or other book, in a detachable manner, so as to conveniently permit the insertion oi new leaves, and the removal of old ones.

It relates to that form oi binder in which two symmetrical halves are made to clamp the edges oi the loose leaves and have telescopic anchorage posts which protrude through slots in the leaves and also marginal clamping edges which by suitable mechanism may be adjusted toward or from each other to clamp or release the interposed leaves.

My invention consists chiefly in laterally expansible telescopic posts which, when seated in the slots of the leaves, may be expanded to tighten the post in said slot to hold it true and firm.

Figure l is a perspective view oi the binder mechanism with the back plate removed. Fig. 2 is an inside viewin perspective oi the back plate removed. Fig. 3 is a longitudinal section of the binder. Fig. 4 is a partial inside face view oi the same. Fig. 5 is a cross section on line 5 5 oi Fig. l. Fig. 6 is a section on line 6 6 o Fig. 3 looking in the direction oi `the arrow and Fig. 7 is a detail.

In the drawing, Figs. l and 5, A, A A2, is one half section and B, B B2, the other haltl section of the two main parts of the binder, which are adjustable to and' from each other, both half sections being constructed alike.

P is the removable back plate which is curved transversely to present a convex exterior and which houses and incloses the operative parts of the binder.

C C are the two hinged metal strips to which the covers oi the book are attached. These strips are connected by a long hinge pin c to keepers c struck up from the plates A and B and lying within the inward curve of these plates and which is of the usual construction and to which I make no claim.

The plates A and B are curved outwardly and then inwardly toward the center of the binder and their edges join on to and are rigidly attached to the parallel plates A B and also to the plates A2 B2. The plates A B lie in the same plane with each other but at right angles to the leaves of the book. To the plates A B are riveted headed pins a b, a b the two pins of each pair being transversely opposite each other, as seen in Fig. l.

D and E are two longitudinally sliding plates arranged iiat against the plates A B and having at- 'tached to them screw threaded hubs D E one having a right and the other a left hand screw thread.

l The plates D and E have each a pair of inclined cam slots d d and c e. These slots embrace or give passage to the pins a b, a b of the two halves oi the binder. The slots of each pair d d and e e converge toward the center with an equal inclination, so that when an opposite movement is given to the two sliding Cam plates D and E the pins traversing the slots move outwardly or inwardly according tothe direction of movement oi the plates and so cause the two half sections of the binder to approach or recede from each other. To give this opposite motion to the two plates D and E, a longitudinally arranged screw shaft F is arranged within the back plate and has at one end a right hand thread and at the other end a leit hand thread, and these two threads are respectively engaged with the right and left screw threads of the two hubs D E of the sliding cam plates D and E. The screw shaft F is squared at its end f to receive a winding key by which it is turned and this squared end protrudes through a hole at the end oi the binder so as'to be easily accessible for adjustment. l

ment and thus insure the equal and simultaneous movement of the cam plates D and E, the screw shaft is made to swivel in bearings lixed to the inner face of the back plate P. These bearings consist of slotted transverse flanges g and g, Fig. 2, one of which embraces the reduced end of the shaft see Fig. 3 and the other of which embraces the shaft between two rigid collars h h on said shaft. The back P has at each end an ofisetting seat P and has also a small detachable clip plate P2 at each. end, one of which is clamped to the seat by. two screws, and said clip plates overlap the end edges of the two plates A B of the two halves of the binder, so as to hold the back in place.

In Fig. 2 one clip plate P2 is shown permanently attached to the back and in Fig. l the other detached clip plate P2 is shown behind plates A B. The two half sections are each provided on their inner walls with inwardly projecting telescopic posts composed of a small post G attached to one section and entering a tube G attached to the other section in alinement with the first named. There may be any number of these telescopic posts. They pass through the slotted holes of theleaves I that are to be bound in the book. These posts are of circular cross section and their two parts are of very nearly the same diameter.

At each end of the binder there is a telescopic slide Figs. I and 3 consisting of a flat tube .I iiXed to one half of the binder, and receiving a corresponding flat bar .I fixed to the other half oi the binder. Those end slides simply form expansible ends for the binder and aidin holding the parts in proper relation and in guiding them to and from each other. When leaves, such as partly shown at I, are to be inserted in the binder, the binder is rst opened by its right and left screw To hold the screw shaft against longitudinal moveshaft; then the leaves with slots t' cut to correspond in number and spacing to the telescopic posts, are inserted laterally into the binder between the clamping edges, the slots i of the leaves slipping over the telescopic posts. The binder sections are then brought together by reversing the direction of movement of the double screw shalt so as to clamp the leaves.

To render the clamping oi the leaves firmer against displacement and more accurate in registration, I have constructed two of the telescopic posts (the two end ones) in a manner permitting lateral expansion, so as to allow them after being in the holes i of the leaves, to be expanded so as to tightly iit in said holes. For this purpose I arrange behind the telescopic posts and between the two adjustable clamp sections of the binder a longitudinally sliding bar K, Figs. 3, 4 and 5, slotted at k and guided by screws 7c. This bar has opposite the two end posts a curved plate l Figs. 6 and 7 fitting half way around the post and fitting closely thereto. At the ends of this curved plate are half round spring plates m m attached respectively to the plates A/ B of the clamp sections and overlapping the ends of the curved plates Z, see Figs. 6 and 7, on the sliding bar K. When this bar K is advanced, its curved plates l Z press 'against the spring plates m m and they together move laterally away from the telescopic posts as indicated in dotted lines in Fig. 7 forming together a laterally expansible post for the two end slots i i of the leaf, so as to cause these two posts to completely iill the slot spaces t' and thus bind against its edges and to closely fit and hold the same and insure perfect registration of the leaves with each other.

The bar K has on the side next to the back a rigidly attached and screw threaded lug K, Figs. l and 3, into which is tapped a screw K2 which has a squared end adapted to receive a key by which it is turned. This screw is swiveled in a sleeve M which also has a parallel sleeve M surrounding the parallel double screw shaft F. By turning the screw K2, it will be seen that the bar K is moved longitudinally and the ktwo end posts are made wider to tighten and hold the leaves in exact registration. When the leaves are to be removed, these two expansible posts are contracted tosmaller size to loosen the leaves and allow them to be taken out. In putting in the leaves, the two end posts are brought to their smallest lateral dimensions, and the clamp sections of the binder are separated a su'tcient distance. The leaves are then inserted, the expansible posts expanded, and the clamp sections of the binder then brought together to clamp all the leaves together.

All the main parts of the binder are made of light weight steel and the exposed surfaces are suitably covered with the leather binding of the book.

By the lateral expansion of the posts to fill out the holes in the leaves, I do away with the necessity of having to open up the binder from one half inch to an inch in order to allow the slotted leaves to spread over the posts and be removed from the binder. I also prevent the tearing of leaves in putting the same in or removing them from the binder, as I only have to release the compression enough to loosen the leaves and by contracting the expansible posts I can remove and insert leaves in any part of the binder. As the extra space which it usually takes to permit the changing of leaves is not needed, my binder will hold more leaves for the same size of binder.

I claim l. A loose leaf binder having laterally expansihle anchorage posts.

2. A loose leaf binder having a laterally expansible anchorage post with two curved springs and a curved plate hearing against the springs, and means for causing the said plate and spring to move laterally in relation to thc post.

3. A loose leaf hinder having a laterally expansihle an- A chorage post and a longitudinally sliding bar connecting with the expansible part of the post.

4. A loose leaf binder having a laterally expansible anchorage post, a longitudinally adjustable bar connected with the expansible part of the post and an adjusting 8() screw for said bar. l

5. A loose leaf hinder having an anchorage post expansible both longitudinally and laterally.

G. A loose leaf hinder having two clamping sections and laterally expansible anchorage posts, and two parallel screw shafts, one working the expansible clamp sections and the other working the expansible anchorage posts.

JOHN F. GLOE.

Witnesses .Tlico Orion, BERT KnAUs. 

